Storage battery.



No. 7mm. Patented out. 2|, |902.

D. E.A WISEMAN. STORAGE BATTERY.

(Applicato'n led Mar. 12. 1901.)

(No Model.)

Horne/ld:

we mams PETERS co, Fumo-umn, wAsumcroN, n. c

IINI'T'ED STATES PATENT OFFICE.

DANIEL E. WISEMAN, OF CHICAGO, ILLINOIS, ASSIGNOR OF TWO-THIRDS TO W. W. VANCE, OF OTTUMWA, IOWA, AND CHARLES V. ASPINWALL, OF

CHICAGO, ILLINOIS.

STORAGE BATTERY.

SPECIFICATION forming part of Letters Patent No.- 711,710, dated October21, 1902.

Application med Marcil iz, 1901. serai No. 50,884. No model.) 4 f To all whom t may concern.-

Beit known that I, DANIEL E. WISEMAN, a citizen of the United States, residing at Chicago, in the county of Cook and'State of Illinois, have invented Ia new and useful Storage Battery or Electrical Accumulator, of whichI the following is a specification.

This invention relates generally vto secondary or storage batteries, and .has for its obxo jects to produce abattery which shall be cheap and simple in construction and highly efficient in operation and one in which all tendency of buckling under expansion or contraction is counteracted, one in which a wide range in the rate of charging and dischargingis obtained, and one in which the extremity of porosity and lightness Without sacrifice to the danger of disintegration is obtained and one in which .the actual Workingsurface produces the maxizo mum for a given Weight.

With these objects in View the invention consists in the novel features of construction and combination hereinafter fully described, and pointed out in the claims. z5 In the drawings forming partof this speciiication,Figure l isaperspective view showing the battery constructed in-a'ccordance Withmy invention, portions of the receptacle be-` ing broken away to disclose the interior con- 3o struction.

View showing the ribbon in elevation. `Fig. 3 is a transversesectional view showingthe ribbon in elevation. Fig. 4 is a detail sectional view taken through one or more layers of the lead strips. l

In carrying out my invention I employ a suitable receptacle or cell A, which is preferably rectangular in shape andis made of any size and material desired. Arranged within 4o this cell or receptacle are the positive'and negative elements B and B', each composed of a thin strip of lead bent back and forth upon itself a number of times intermediate its ends, the ends of eachfstrip being connected and projected above the cell, as shown at B2, the top vA' of the cell having openings A2, through which the terminals of the elements pass. These strips of lead bent as described are arranged side by side and are held Vthe lead strips.

Fig. 2 is a longitudinal sectionalY in their proper positions by means of rods C, 5o said rods being fixed insockets C', produced in the bottom of the cell or receptacle and passing upwardly through'each turn orbend of the lead strips, there' being two rods for each strip, as clearly shown. The upper ends of the rods C are preferably seatedin sockets C', produced in the underside of the coverA. Each leadf strip is formed with a series of hemispherical depressions D, which serve a double function-rst, to receive the active 6o material, and, secondly, to hold the bends or turns Aof the lead stripin their proper relative parallel positions. lAny suitable electrolyte or exciting liquid may be employed and is `poured into the receptacle to a height sufcientV to cover-.all the bends or turns of both A supplemental cover E may be arranged within the cell Aor receptacle, if so desired, and if so employed itis preferably arranged upon an inclination, as shown, the 7o purpose of said supplemental cover being to prevent slopping overvof the electrolytic liquid. By arranging the elements as herein shown the necessity of a separator is avoided, and by constructing and arranging the lead strips in the manner set forth I am enabled to secure a battery of maximum strength with the minimum weight, one which will avoid buckling, and one in which a wide range is obtained in the rate of charging and discharging. f Y v Having thus fully Vdescribed my invention,

-what Iclaim as new, and desire to secure by Letters Patent, is-

l. A storage or secondary battery consisting of two electrodes immersed in a 'suitable electrolyte and inclosed in a suitable cell, said electrodesbeing supported upon rods fixed in the cell, said electrodes being composed of a conducting strip orv ribbon being bent back 9o and forthupon itself in serpentine form, and said strip or ribbon having a series of depressions produced therein to receive active material.

2. A storage or secondary battery comprising incombination acell or receptacle having supporting-rods arranged therein, the electrodes arranged side by side within the cell or receptacle, ea'eh electrode consisting ofl acover and main cover, allarranged and adaptstrip of lead bent back and forth upon itself fed to operate, substantially as described. intermediate its ends, the ends of each elec- In testimony whereof I have hereunto subtrode being united and providingatermiual, scribed my name this 12th day of February,

5 the supporting-rods passing through the said A. D. 1901.

bends or turns of each strip, the bent p0rtions of each strip having a series of essen- DANIEL E WISEMAN tially hemispherical depressions produced Irl-presence oftherein, the active material arranged in said CHARLES V. ASPINWALL, 1o depressions, the electrolyte, the supplemental RICHD. P. SAUERHERING. 

